/* ==========================================
   DuskPetal 暮色花笺 - Animations
   ========================================== */

/* Page Load Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animation Classes */
.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out;
}

.animate-slideInLeft {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slideInRight {
  animation: slideInRight 0.6s ease-out;
}

.animate-scaleIn {
  animation: scaleIn 0.6s ease-out;
}

/* Scroll Triggered Animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.animated {
  opacity: 1;
  transform: translateY(0);
}

.scroll-animate-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-left.animated {
  opacity: 1;
  transform: translateX(0);
}

.scroll-animate-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-right.animated {
  opacity: 1;
  transform: translateX(0);
}

.scroll-animate-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate-scale.animated {
  opacity: 1;
  transform: scale(1);
}

/* Stagger Animation Delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* Hover Effects */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.hover-zoom {
  overflow: hidden;
}

.hover-zoom img {
  transition: transform 0.5s ease;
}

.hover-zoom:hover img {
  transform: scale(1.08);
}

.hover-glow {
  transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 4px 20px rgba(139, 115, 85, 0.3);
}

/* Button Hover Effects */
.btn-hover-shine {
  position: relative;
  overflow: hidden;
}

.btn-hover-shine::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-hover-shine:hover::before {
  left: 100%;
}

/* Image Hover Overlay */
.image-overlay {
  position: relative;
  overflow: hidden;
}

.image-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(139, 115, 85, 0.7);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.image-overlay:hover::after {
  opacity: 1;
}

.image-overlay-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  color: white;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.image-overlay:hover .image-overlay-content {
  opacity: 1;
}

/* Typing Cursor Animation */
.typed-cursor {
  opacity: 1;
  animation: blink 0.7s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
}

/* Loading Animation */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-background);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-flower {
  width: 60px;
  height: 60px;
  position: relative;
  animation: rotate 2s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.loader-petal {
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 50% 50% 50% 0;
  opacity: 0.8;
}

.loader-petal:nth-child(1) {
  top: 0;
  left: 20px;
  animation: petalPulse 1.5s ease-in-out infinite;
}

.loader-petal:nth-child(2) {
  top: 10px;
  right: 0;
  animation: petalPulse 1.5s ease-in-out infinite 0.2s;
}

.loader-petal:nth-child(3) {
  bottom: 0;
  left: 20px;
  animation: petalPulse 1.5s ease-in-out infinite 0.4s;
}

.loader-petal:nth-child(4) {
  top: 10px;
  left: 0;
  animation: petalPulse 1.5s ease-in-out infinite 0.6s;
}

@keyframes petalPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Fade Transition for Page Changes */
.page-transition {
  animation: fadeIn 0.5s ease-out;
}

/* Card Hover Animation */
.card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Link Underline Animation */
.link-underline {
  position: relative;
  text-decoration: none;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.link-underline:hover::after {
  width: 100%;
}

/* Parallax Effect */
.parallax {
  will-change: transform;
  transition: transform 0.1s ease-out;
}

/* Pulse Animation for Icons */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Shimmer Effect for Loading States */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* Gentle Bounce for Back to Top */
@keyframes gentleBounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.back-to-top.visible {
  animation: gentleBounce 2s ease-in-out infinite;
}

.back-to-top:hover {
  animation: none;
}